A song or piece of music, that or may not have been created with the specific intention to inspire women to the dance floor, evoking gyrations and sways which in turn cause a woman's strategically exposed cleavage to jiggle.
Cute girl: "Oh...my...gawd, this is my jam! It's a total titty jiggler! Let's hit the dance floor!!!"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi